How to select one row randomly taking into account a weight?

Question

I have a table which looks like that:

id: primary key
content: varchar
weight: int

What I want to do is randomly select one row from this t

Answer 1

I don't remember how to RND() in mysql, but here working example for MSSQL:

SELECT TOP(1) (weight +RAND ()) r, id, content, weight FROM Table
ORDER BY 1 DESC

If TOP(1) is not applicable you just fetch first record from total result set.